At the end of this week's episode, "Harlan Roulette," Raylan's pursuit of Wynn Duffy (Jere Burns) brought him face-to-face for the first time with his real nemesis, Detroit mob "star" Robert Quarles (Neal McDonough). The episode ended perfectly with Raylan snapping Quarles' photo and giving him a look that said, A. "You're strange," and B. "Should I be worried about you?"

In "The Devil You Know," Raylan's got some old enemies on his mind. As you can see in the teaser above, a prison break puts him in pursuit of none other than Dickie Bennett (Jeremy Davies), and some other folks.